American horological journal, devoted to practical horology (1869)
Miller, George B · New York, G. B. Miller · leaf 95
of the wheel; divid-ed by 15, the number of wheel teeth, givesU3 21° for the span from one tooth to the 86 AMERICAN HOROLOGICAL JOURNAL. other; this multiplied by 2 \, the number ofteeth the pallet is to span, gives 24° X 2| =60°, which are laid out, by the aid of the pro-tractor, on each side of… … the pallet, marked M. We must next proceedto determine the strength of the pallet armsand the wheel teeth, thus : 24° being thespace from one tooth tu another, we take asixth part of this (4°) for the strength of thewheel teeth, anil will then have 20° left; fromthis take one half (10°) for the…
Clocks and watches
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer01inte-476-189.webp)
